Improvement in sheet-gauges for printing-presses



2 Sheets-Sheet l.

G. B. CUMMINGS. SHEET GAGE FOR PRINTING PRBSSES'.

No. 99,167. Patented Jan. 25, 1870.

2 Sheets--Sheet 2.

G. B. CUMMINGS.

' SHEET GAGE FOR PRINTING PRESSES.

No. 99,167. Patented J zs, 1870.

duitctg tatwf WWW.

GEORGE B. CUMMINGS, 0E" CAMBRIDGE, MASSACHUSETTS.

Letters Patent No. 99,167, dated January 25, 1870.

To all whom it may concern Be it known that I, GEORGE B. CUMMINGS, of

Cambridge, in the county of Middlesex, and State of drop-spring and catch.

Figure 3 is a. perspective view of the apron of the .dams press, so called, from which isfed the sheet to the printed; the gauge, as applied to the apron in 1 twoplaces, when ready for use; also part of the first enings of the gauge to the apron, and the two points y in the apron, which hold the sheets of paper in place;

The'letter A represents the gauge.

a, the drop or guide.

I), the spring. c, the finger-catch.

d, a slot in the gauge, through which pass the fast enings.

0, slot in gauge, for the drop to operate in.

B, (fig. 3,) the apron.

ff, the flat heads of the thumb-screws, securing the gauges to the apron.

-g g, metallic pointsor pinsin the apron, upon which sheets of paper are secured, and held in exact position while-.either side of the paper is being printed.

Nat-are and Objects of the I iirention.

The sheet-gauge, for printing-presses, is a strip of sheet-metal,'abouttwelve inches long and three inches wide, having a shoulder or rest near one end, againstwhich the sheets rest when they are to be pointed,

and spread out upon the apron preparatory to the im- 'pression of the type. Two are used, and fastenerlto the apron, at about equal distances from a line connecting the points in the apron. This gauge is used with what is known as the Adams printing-press.

In printing, the gauges are first fastened to the apron by some device, generally a thumb-screw, having a flat head, the screw passing through a slot in the gauge, its head resting upon the adjacent edges of the slotted parts, and the nut fastening it underneath the apron. The sheet is then laid on the apron to these gauges, or one end of the paper rests against the shoulders, and the sheet is then pressed upon the points, which hold it fast, when the sheet is ready to be fed for the first side.

After printing one side, the sheet is turned over and again pointed; and in order that both sides of the sheet may be evenly printed, the points must, .of course,.enter the perforations already made.

The gauges, as they are now constructed and used, must be moved out of place, that is, unscrewed and slipped off the apron,so that the sheet may go on the points without obstruction, and lie perfectly free and smoothly upon the apron, and the gauges must be set to the edges of the sheet and pointed again. This operation, of 'course, consumes "time, and much care must be taken to-have the shoulders of the gauges evenly set, or intheir former places.

" The improvement will be clearly seen, thus:

'Whenthe gauges are fastened to the apron, in their. proper places, and one side of the sheet is printed, in-

stead of unscrewing and moving them, the shoulders are pushed down, leaving the apron free for the sheet .to be turned and pointed, and then, by a move of the hand,'they are reset in their proper places.

General Description.

The improvement will be readily understood by ex-' the pressinan is sure his margin is the same as on the previous form.

The drop is in the form of a hinge, fastened to the under side of the gauge, at the bend seen in fig..2.

There is also a spring, b, resting upon the hinge, keeping the drop in place, whether up or down.

0 is a catch, simply for the finger, in pushing up or down.

What I claim as my invention, and desire to secure by Letters Patent, as applied to the sheet-gauge for printing-presses, is, I

The arrangement of the drop a, the spring I), and the catch 0, with the gauge A, all being combined and operatingsubstantially in the manner and forthe pur- GE O. B. CUMMINGS.

' poses described.

Witnesses:

GEO. Itionsnrrn, J.,L. Newton. 

